AOR AR-2700 Wideband Reciever Operating Manual

AR2700 operating manual
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(1)  Introduction & accessories
Thank you for purchasing the new AOR AR2700 wide band receiver.
This operating manual is divided into many sections and presented in a logical
order assuming that it will be read section by section following the examples.
However, if you are familiar with the operations of modern multi-function
receivers you may proceed directly to section 6.  Many phrases are
repeated through the manual, while this may make the text a little repetitious, it...

AR2700 operating manual
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[PWR] power switch: The power switch is not of the traditional “click”
operation but microprocessor controlled, this is to facilitate the sleep timer.
To switch the receiver On, press and hold the [PWR] key for more than
1.5 seconds.  Similarly to switch the receiver Off, press and hold the [PWR]
key for more than 1.5 seconds.
Full microprocessor reset: Later in this manual reference is made to FULL
microprocessor reset.  The AR2700 takes about 30 seconds to recover
following a...

AR2700 operating manual
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5-12 [RESET] microprocessor reset switch   .................... 23
RIGHT HAND SIDE   ............................................... 24
5-13 DC 12V - charging and DC input socket   ................. 24
REAR CABINET   .................................................... 24
5-14 RS232 REMOTE connector   .................................... 25
5-15 Battery compartment   .............................................. 25
6 Basic manual operation of the receiver   ............. 26
6-1...

AR2700 operating manual
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13-3 Record - Play back   ............................................... 56
14 Remote control using a computer (RS232)   ....... 56
14-1 Setting RS232 parameters   .................................... 57
15 Clone (copy) data between two AR2700  .............. 57
15-1 Transferring data by clone   .................................... 57
16 Trouble shooting   ................................................. 58
16-1 Microprocessor reset...

AR2700 operating manual
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Memories and search banks
A total of 500 memory channels are provided which are divided into 10 banks,
each having 50 channels.  The AR2700 will search and scan at a very
respectable (and fast) maximum speed of approximately 30 increments per
second.
In addition there are 10 programmable search banks, all of which may be
programmed by the operator for different start / end frequencies, mode and
channel step.
The data contents of memory and search banks are held in an EEPROM so...

AR2700 operating manual
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(4)  Precautions
4-1  Location
Do not use or leave the receiver in direct sunlight (especially the LCD).  It is
best to avoid locations where excessive heat, humidity, dust and vibration are
expected.  Always treat the receiver with care.
Take care to avoid spillage or leakage of liquids into the receiver and AC
charger.  Special care should be taken to avoid liquid entering via the power
jack and earphone sockets.  Always remove batteries if the receiver is not
going to be used...

AR2700 operating manual
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plug and water pipe, central heating system radiator or external earth rod.  If
fitting a separate external earth rod, consider the implications carefully if your
mains supply uses a Protective Multiple Earth (PME) system.  If in doubt
consult an experienced electrician.  Never earth to a gas pipe!
Always disconnect the charger from the AC mains supply when not in use.
If using dry batteries (Alkaline or Manganese), always remove the batteries
when exhausted or if the AR2700 is...

AR2700 operating manual
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Important!
Do not overcharge the NiCad pack, 16 hours is
sufficient from flat.  In severe cases of overcharging
high temperatures may be generated, this can result
in damage to the NiCads and to the receiver.  If this
point is ignored, there is a small but potential danger
of personal injury due to explosion.  Never short
circuit NiCad batteries, the effect is similar to
overcharging but happens very quickly.  Never
attempt to charge dry batteries.
4-5  Aerial (antenna)...

AR2700 operating manual
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Shortwave long wire aerials
For the shortwave bands a different type of aerial will be required.  The most
common form is the random long wire connected to the centre terminal of the
BNC plug or wrapped around the retracted telescopic whip aerial.
Aerial Tuning Units (ATU)
An ATU can improve the selectivity of any shortwave receiver when connected
to long wire aerials.  This valuable extra selectivity is achieved by the ATU
rejecting out of band signals enabling the receiver to...

AR2700 operating manual
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5-1  Aerial (antenna) input
The aerial input is via a high quality BNC 50 OHM socket.  The standard
supplied telescopic whip should be connected to this point and provide good
result across most of the receiver’s frequency coverage.
5-2  EAR - Earphone / speaker connection
This 3.5mm mono socket permits connection to an external earphone, headset
or speaker of 8 OHM impedance or greater.  When this earphone socket is
used, the internal speaker will be automatically...